Search notes:

/sys/bus

/sys/bus is a directory for the available bus types (PCI, IDE, USB) in the kernel.

Each directory under /sys/bus contains at least the following two subdirectories:

/sys/bus/XXX/devices and
/sys/bus/XXX/drivers.

Directories I've found under /sys/bus include:

`acpi`
`clockevents`
`clocksource`
`container`
`cpu`
`dax`
`event_source`
`hid`
`i2c`
`mdev`
`memory`
`nd`
`nvmem`
`pci`
`pci_express`
`platform`
`pnp`
`scsi`
`serio`
`usb`
`usb-serial`
`vdpa`
`virtio`
`vmbus`	Windows Subsystem for Linux: Bus to Hyper-V (see `drivers/hv/vmbus_drv.c`).
`workqueue`

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Linux/fh...', 1759384223, '216.73.216.42', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Linux/fhs/sys/bus/index(73): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78

/sys/bus

See also